Filtration system



FIG. 1 is a perspective view of the filtration system showing our new design;

FIG. 2 is a front view thereof:

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left end view thereof;

FIG. 7 is a right end view thereof;

FIG. 8 is an enlarged view of the portion identified as “8” in FIG. 1;

FIG. 9 is an enlarged view of the portion identified as “9” in FIG. 1;

FIG. 10 is an enlarged view of the portion identified as “10” in FIG. 3;

FIG. 11 is an enlarged view of the portion identified as “11” in FIG. 6;

FIG. 12 is an enlarged view of the portion identified as “12” in FIG. 6; and,

FIG. 13 is an enlarged view of the portion identified as “13” in FIG. 6.

The broken lines in the drawings represent portions of a filtration system and form no part of the claimed design. 

CLAIM The ornamental design for a filtration system, as shown and described. 